402303402 has 64 divisors (see below), whose sum is σ = 956188800. Its totient is φ = 124934400.

The previous prime is 402303401. The next prime is 402303403. The reversal of 402303402 is 204303204.

It is an interprime number because it is at equal distance from previous prime (402303401) and next prime (402303403).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (402303401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90549 + ... + 94887.

It is an arithmetic number, because the mean of its divisors is an integer number (14940450).

Almost surely, 2^402303402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402303402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (478094400).

402303402 is an abundant number, since it is smaller than the sum of its proper divisors (553885398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402303402 is a wasteful number, since it uses less digits than its factorization.

402303402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4468 (or 4462 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 402303402 is about 20057.5023868876. The cubic root of 402303402 is about 738.2178945472.

Adding to 402303402 its reverse (204303204), we get a palindrome (606606606).

The spelling of 402303402 in words is "four hundred two million, three hundred three thousand, four hundred two".